FR2451471A1 - Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed - Google Patents

Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed

Info

Publication number
FR2451471A1
FR2451471A1 FR7906746A FR7906746A FR2451471A1 FR 2451471 A1 FR2451471 A1 FR 2451471A1 FR 7906746 A FR7906746 A FR 7906746A FR 7906746 A FR7906746 A FR 7906746A FR 2451471 A1 FR2451471 A1 FR 2451471A1
Authority
FR
France
Prior art keywords
tdc
engines
speed
data
digital electronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7906746A
Other languages
French (fr)
Other versions
FR2451471B1 (en
Inventor
Roger Machetel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7906746A priority Critical patent/FR2451471A1/en
Publication of FR2451471A1 publication Critical patent/FR2451471A1/en
Application granted granted Critical
Publication of FR2451471B1 publication Critical patent/FR2451471B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices
    • F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

A digital electronic circuit gives control of the time interval in which the primary current flows in an ignition coil. This allows improved coil design. The circuit accepts synchronising pulses from transducers mounted on the crankshaft to provide data on engine speed and piston location. One signal corresponds to Top Dead Centre (TDC) and the other is ahead of TDC. These signals are fed to an automatic advance control circuit which emits a signal ahead of TDC. A count M synchronised by the TDC pulses is related to engine speed. A predetermined count L proportional to the desired on time is subtracted from M and the result loaded to a programmable down counter (11) which is decremented to zero to end the off period and commence the on period when the coil primary current flows, terminated by the next automatic advance controller pulse. Special provisions are made at starting speeds.
FR7906746A 1979-03-16 1979-03-16 Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed Granted FR2451471A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7906746A FR2451471A1 (en) 1979-03-16 1979-03-16 Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7906746A FR2451471A1 (en) 1979-03-16 1979-03-16 Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed

Publications (2)

Publication Number Publication Date
FR2451471A1 true FR2451471A1 (en) 1980-10-10
FR2451471B1 FR2451471B1 (en) 1984-06-22

Family

ID=9223214

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7906746A Granted FR2451471A1 (en) 1979-03-16 1979-03-16 Electronic ignition timing system for IC engines - uses digital electronic circuits to control firing timing based on data on crankshaft position and speed

Country Status (1)

Country Link
FR (1) FR2451471A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493412A1 (en) * 1980-11-04 1982-05-07 Renix Electronique Sa OPTIMAL CONDUCTION TIME CONTROL IGNITION COIL CONTROL DEVICE FOR EXPLOSION ENGINE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323028A1 (en) * 1975-09-03 1977-04-01 Bosch Gmbh Robert METHOD FOR DETERMINING A PROCESS THAT REPEATS PERIODICALLY IN INTERNAL COMBUSTION ENGINES AND APPLICATION DEVICE
US4018202A (en) * 1975-11-20 1977-04-19 Motorola, Inc. High energy adaptive ignition via digital control
US4052967A (en) * 1976-06-24 1977-10-11 General Motors Corporation Digital electronic ignition spark timing system
US4081995A (en) * 1977-02-22 1978-04-04 Rockwell International Corporation Apparatus and method for extrapolating the angular position of a rotating body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323028A1 (en) * 1975-09-03 1977-04-01 Bosch Gmbh Robert METHOD FOR DETERMINING A PROCESS THAT REPEATS PERIODICALLY IN INTERNAL COMBUSTION ENGINES AND APPLICATION DEVICE
US4018202A (en) * 1975-11-20 1977-04-19 Motorola, Inc. High energy adaptive ignition via digital control
US4052967A (en) * 1976-06-24 1977-10-11 General Motors Corporation Digital electronic ignition spark timing system
US4081995A (en) * 1977-02-22 1978-04-04 Rockwell International Corporation Apparatus and method for extrapolating the angular position of a rotating body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493412A1 (en) * 1980-11-04 1982-05-07 Renix Electronique Sa OPTIMAL CONDUCTION TIME CONTROL IGNITION COIL CONTROL DEVICE FOR EXPLOSION ENGINE
EP0051529A1 (en) * 1980-11-04 1982-05-12 Siemens Automotive S.A. Control device for the regulation of the optimal conducting time of an ignition coil for an internal-combustion engine

Also Published As

Publication number Publication date
FR2451471B1 (en) 1984-06-22

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Legal Events

Date Code Title Description
ST Notification of lapse